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Desulfurization application method of super-deep oxidative desulfurization catalyst

A desulfurization catalyst, deep oxidation technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of high sulfur content and olefin loss, and achieve desulfurization Low cost, high utilization rate, the effect of reducing production cost

Inactive Publication Date: 2012-05-02
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the consumption of hydrogen peroxide in these methods is about 10 times that of sulfur-containing compounds (molar ratio), and the sulfur content is still high after desulfurization with a large amount of extraction agent.
Moreover, under this desulfurization method, the oil components that are easily oxidized but need to be retained in the oil may also be oxidized and cause their loss.

Method used

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  • Desulfurization application method of super-deep oxidative desulfurization catalyst
  • Desulfurization application method of super-deep oxidative desulfurization catalyst
  • Desulfurization application method of super-deep oxidative desulfurization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1 Catalyst [C 18 h 37 N + (CH 3 ) 3 ] 4 [H 2 Se IV 3 W 6 o 34 ] Preparation:

[0043] As a typical example, the catalyst [C 18 h 37 N + (CH 3 ) 3 ] 4 [H 2 Se IV 3 W 6 o 34 ] can be prepared as follows: 2.53g H 2 WO 4 Suspended in 8 mL of 30% H 2 o 2 , stirred in a water bath at 60°C for 40min to obtain a light yellow turbid liquid, and removed insoluble matter by centrifugation (2000rpm, 15min) and then added 2.23g of 60% H 2 SeO 3 aqueous solution, and stirred at room temperature for 60min to obtain a clear solution L, and another 3.52g [C 18 h 37 N + (CH 3 ) 3 ]Cl dissolved in 20mL CHCl 3 , after shaking well, slowly add it dropwise into solution L, stir vigorously while adding, and immediately obtain a white emulsion. 4 After drying, the organic solvent was evaporated to obtain a beige flaky solid. After washing with excess water and absolute ethanol, it was placed in a vacuum oven overnight to obtain catalyst A. The infrare...

Embodiment 2

[0045] With embodiment 1, just drop [C 18 h 37 N + (CH 3 ) 3 ]Cl CHCl 3 The solution was changed to direct addition (n-C 4 h 9 ) 4 N + Cl, to obtain catalyst B.

Embodiment 3

[0047] With embodiment 1, just [C 18 h 37 N + (CH 3 ) 3 ]Cl to [C 12 h 25 N + (CH 3 ) 3 ]Cl to obtain catalyst C.

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Abstract

The invention relates to a super-deep oxidative desulfurization catalyst and desulfurization application thereof. The super-deep oxidative desulfurization catalyst is an amphiphilic catalyst and has an expression of Qp[HqSexMyOz], wherein in the expression, p is an integer greater than or equal to 1, q is an integer greater than or equal to 0 and less than 2x and x is an integer greater than or equal to 1; y is greater than or equal to 2x and is less than or equal to 16x; z is greater than or equal to 3(x+y) and is less than or equal to 4x+5y; p is equal to 2x-q; Q represents surfactant cation which can be quaternary ammonium salt cation, alkyl pyridine salt cation, phosphonium cation, sulfonium cation and the like, generally quaternary ammonium salt cation with at least one alkyl chain of which the number of carbon atoms is not less than 4 is chosen; Se represents selenium atom which can be in the valence state of tetravalence or sexavalence; Se in a contrast catalyst can also be P, AS, S or Si of the highest valence, be blank, and the like, M represents transition mental atom which can be W, Mo, Ti, V, Mn, Ru, Cr, Fe, Co and the like, and generally can be W or Mo; and O represent oxygen atom. The catalyst in the invention can also be used for preparing an ultra-low-sulfur oil product with sulfur content of less than 5 ppm; implement conditions are mild; and the utilization rate of an oxidant is high.

Description

1. Technical field [0001] The invention relates to a catalyst for ultra-deep oxidation desulfurization and its application in the preparation of ultra-low sulfur oil. 2. Background technology [0002] The removal of sulfur-containing compounds in fuel oil has attracted more and more attention, because the sulfur-containing compounds in oil products will not only cause irreversible poisoning to the catalysts in the refining process and automobile purification system, but also produce SO X It will cause serious environmental problems such as acid rain. At the same time, the application of new fuel cells also requires ultra-low or even zero sulfur content in fuel. Therefore, the production and use of environmentally friendly and clean petroleum products has become a problem that countries all over the world pay attention to. The environmental protection regulations of various countries have put forward more and more strict standards for the allowable sulfur content of oil prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/16C10G27/12
Inventor 胡柏星胡意文何其慧张政
Owner NANJING UNIV
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